Been lurking around the forum for a few years and thought i'd finally chime in. I own a 2017 Soul EV lux with sunroof purchased new Dec 2016. Still loving it every day.
I did a significant amount of research before I purchased my winter tires and was originally going with Michelin X-Ice but ended up with Yokohama IceGuard iG53. Kia recommends, at this point, the Yokohama as the preferred winter tire. They were okay with installing the Michelin but I noticed Trev from model 3 owners club was rocking the Yokohama so I followed his lead. I trust his opinions on most things EV so yeah that's what I did.
I put them on the stock wheels and I'm buying Fast Wheels EV01+ for my summer tires, which won't be the Nexen tires they came with. Way too slick when it's wet as previously reported everywhere haha. My Kia dealer can order the EV01+ and everything is solid with the factory warranty etc so no hassles. If your dealer tells you otherwise try a different dealer. Kia Lockwood in Oakville was a pain in the you know what and Leggat Kia all good and excited to help me try out new aftermarket EV wheels.
So far no noticeable range loss and I'll get a better look at mileage over the next few weeks. I was expecting more noise simply because of the tread size but was pleasantly surprised that it's not too bad. Certainly a bit more noise but I think it's a bit quieter after breaking in a little. A bit of a quick wuh wuh wuh wuh wuh noise on certain types of roads. Haven't been able to pin point it yet. They're much softer with a bit of spring to them. So far pretty happy with my purchase.
Check out the Fast Wheels EV01+ i'm getting for the summer tires. Can't wait to try with and without inserts. Good times.